com.google.cloud.tools.jib.api

Class JavaContainerBuilder

java.lang.Object

com.google.cloud.tools.jib.api.JavaContainerBuilder

public class JavaContainerBuilder
extends Object

Creates a JibContainerBuilder for containerizing Java applications.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JavaContainerBuilder.LayerType Represents the different types of layers for a Java application.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_APP_ROOT The default app root in the image.
static String	DEFAULT_WEB_APP_ROOT The default webapp root in the image.

Method Summary

Modifier and Type	Method and Description
JavaContainerBuilder	addClasses(Path classFilesDirectory) Adds the contents of a classes directory to the image.
JavaContainerBuilder	addClasses(Path classFilesDirectory, Predicate<Path> pathFilter) Adds the contents of a classes directory to the image.
JavaContainerBuilder	addDependencies(List<Path> dependencyFiles) Adds dependency JARs to the image.
JavaContainerBuilder	addDependencies(Path... dependencyFiles) Adds dependency JARs to the image.
JavaContainerBuilder	addJvmFlag(String jvmFlag) Adds a JVM flag to use when starting the application.
JavaContainerBuilder	addJvmFlags(List<String> jvmFlags) Adds JVM flags to use when starting the application.
JavaContainerBuilder	addJvmFlags(String... jvmFlags) Adds JVM flags to use when starting the application.
JavaContainerBuilder	addResources(Path resourceFilesDirectory) Adds the contents of a resources directory to the image.
JavaContainerBuilder	addResources(Path resourceFilesDirectory, Predicate<Path> pathFilter) Adds the contents of a resources directory to the image.
JavaContainerBuilder	addToClasspath(List<Path> otherFiles) Adds additional files to the classpath.
JavaContainerBuilder	addToClasspath(Path... otherFiles) Adds additional files to the classpath.
static JavaContainerBuilder	from(ImageReference baseImageReference) Creates a new JavaContainerBuilder with the specified base image reference.
static JavaContainerBuilder	from(RegistryImage registryImage) Creates a new JavaContainerBuilder with the specified base image.
static JavaContainerBuilder	from(String baseImageReference) Creates a new JavaContainerBuilder with the specified base image reference.
static JavaContainerBuilder	fromDistroless() Creates a new JavaContainerBuilder that uses distroless java as the base image.
static JavaContainerBuilder	fromDistrolessJetty() Creates a new JavaContainerBuilder that uses distroless jetty as the base image.
JavaContainerBuilder	setAppRoot(AbsoluteUnixPath appRoot) Sets the app root of the container image (useful for building WAR containers).
JavaContainerBuilder	setAppRoot(String appRoot) Sets the app root of the container image (useful for building WAR containers).
JavaContainerBuilder	setClassesDestination(RelativeUnixPath classesDestination) Sets the destination directory of the classes added to the container (relative to the app root).
JavaContainerBuilder	setDependenciesDestination(RelativeUnixPath dependenciesDestination) Sets the destination directory of the dependencies added to the container (relative to the app root).
JavaContainerBuilder	setMainClass(String mainClass) Sets the container entrypoint with the specified main class.
JavaContainerBuilder	setOthersDestination(RelativeUnixPath othersDestination) Sets the destination directory of additional classpath files added to the container (relative to the app root).
JavaContainerBuilder	setResourcesDestination(RelativeUnixPath resourcesDestination) Sets the destination directory of the resources added to the container (relative to the app root).
JibContainerBuilder	toContainerBuilder() Returns a new JibContainerBuilder using the parameters specified on the JavaContainerBuilder.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_APP_ROOT

public static final String DEFAULT_APP_ROOT

The default app root in the image. For example, if this is set to "/app", dependency JARs will be in "/app/libs".

See Also:

Constant Field Values

DEFAULT_WEB_APP_ROOT

public static final String DEFAULT_WEB_APP_ROOT

The default webapp root in the image. For example, if this is set to "/jetty/webapps/ROOT", dependency JARs will be in "/jetty/webapps/ROOT/WEB-INF/lib".

See Also:

Constant Field Values

Method Detail

fromDistroless

public static JavaContainerBuilder fromDistroless()

Creates a new JavaContainerBuilder that uses distroless java as the base image. For more information on gcr.io/distroless/java, see the distroless repository.

Returns:

a new JavaContainerBuilder

See Also:

The distroless repository

fromDistrolessJetty

public static JavaContainerBuilder fromDistrolessJetty()

Creates a new JavaContainerBuilder that uses distroless jetty as the base image. For more information on gcr.io/distroless/java, see the distroless repository.

Returns:

a new JavaContainerBuilder

See Also:

The distroless repository

from

public static JavaContainerBuilder from(String baseImageReference)
                                 throws InvalidImageReferenceException

Creates a new JavaContainerBuilder with the specified base image reference.

Parameters:

baseImageReference - the base image reference

Returns:

a new JavaContainerBuilder

Throws:

InvalidImageReferenceException - if baseImageReference is invalid

from

public static JavaContainerBuilder from(ImageReference baseImageReference)

Creates a new JavaContainerBuilder with the specified base image reference.

Parameters:

baseImageReference - the base image reference

Returns:

a new JavaContainerBuilder

from

public static JavaContainerBuilder from(RegistryImage registryImage)

Creates a new JavaContainerBuilder with the specified base image.

Parameters:

registryImage - the RegistryImage that defines base container registry and credentials

Returns:

a new JavaContainerBuilder

setAppRoot

public JavaContainerBuilder setAppRoot(String appRoot)

Sets the app root of the container image (useful for building WAR containers).

Parameters:

appRoot - the absolute path of the app on the container (/app by default)

Returns:

this

setAppRoot

public JavaContainerBuilder setAppRoot(AbsoluteUnixPath appRoot)

Sets the app root of the container image (useful for building WAR containers).

Parameters:

appRoot - the absolute path of the app on the container (/app by default)

Returns:

this

setClassesDestination

public JavaContainerBuilder setClassesDestination(RelativeUnixPath classesDestination)

Sets the destination directory of the classes added to the container (relative to the app root).

Parameters:

classesDestination - the path to the classes directory, relative to the app root

Returns:

this

setResourcesDestination

public JavaContainerBuilder setResourcesDestination(RelativeUnixPath resourcesDestination)

Sets the destination directory of the resources added to the container (relative to the app root).

Parameters:

resourcesDestination - the path to the resources directory, relative to the app root

Returns:

this

setDependenciesDestination

public JavaContainerBuilder setDependenciesDestination(RelativeUnixPath dependenciesDestination)

Sets the destination directory of the dependencies added to the container (relative to the app root).

Parameters:

dependenciesDestination - the path to the dependencies directory, relative to the app root

Returns:

this

setOthersDestination

public JavaContainerBuilder setOthersDestination(RelativeUnixPath othersDestination)

Sets the destination directory of additional classpath files added to the container (relative to the app root).

Parameters:

othersDestination - the additional classpath directory, relative to the app root

Returns:

this

addDependencies

public JavaContainerBuilder addDependencies(List<Path> dependencyFiles)
                                     throws IOException

Adds dependency JARs to the image. Duplicate JAR filenames are renamed with the filesize in order to avoid collisions.

Parameters:

dependencyFiles - the list of dependency JARs to add to the image

Returns:

this

Throws:

IOException - if adding the layer fails

addDependencies

public JavaContainerBuilder addDependencies(Path... dependencyFiles)
                                     throws IOException

Adds dependency JARs to the image. Duplicate JAR filenames are renamed with the filesize in order to avoid collisions.

Parameters:

dependencyFiles - the list of dependency JARs to add to the image

Returns:

this

Throws:

IOException - if adding the layer fails

addResources

public JavaContainerBuilder addResources(Path resourceFilesDirectory)
                                  throws IOException

Adds the contents of a resources directory to the image.

Parameters:

resourceFilesDirectory - the directory containing the project's resources

Returns:

this

Throws:

IOException - if adding the layer fails

addResources

public JavaContainerBuilder addResources(Path resourceFilesDirectory,
                                         Predicate<Path> pathFilter)
                                  throws IOException

Adds the contents of a resources directory to the image.

Parameters:

resourceFilesDirectory - the directory containing the project's resources

pathFilter - filter that determines which files (not directories) should be added

Returns:

this

Throws:

IOException - if adding the layer fails

addClasses

public JavaContainerBuilder addClasses(Path classFilesDirectory)
                                throws IOException

Adds the contents of a classes directory to the image.

Parameters:

classFilesDirectory - the directory containing the class files

Returns:

this

Throws:

IOException - if adding the layer fails

addClasses

public JavaContainerBuilder addClasses(Path classFilesDirectory,
                                       Predicate<Path> pathFilter)
                                throws IOException

Adds the contents of a classes directory to the image.

Parameters:

classFilesDirectory - the directory containing the class files

pathFilter - filter that determines which files (not directories) should be added

Returns:

this

Throws:

IOException - if adding the layer fails

addToClasspath

public JavaContainerBuilder addToClasspath(List<Path> otherFiles)
                                    throws IOException

Adds additional files to the classpath. If otherFiles contains a directory, the files within are added recursively, maintaining the directory structure. For files in otherFiles, files with duplicate filenames will be overwritten (e.g. if otherFiles contains '/loser/messages.txt' and '/winner/messages.txt', only the second 'messages.txt' is added.

Parameters:

otherFiles - the list of files to add

Returns:

this

Throws:

IOException - if adding the layer fails

addToClasspath

public JavaContainerBuilder addToClasspath(Path... otherFiles)
                                    throws IOException

Adds additional files to the classpath. If otherFiles contains a directory, the files within are added recursively, maintaining the directory structure. For files in otherFiles, files with duplicate filenames will be overwritten (e.g. if otherFiles contains '/loser/messages.txt' and '/winner/messages.txt', only the second 'messages.txt' is added.

Parameters:

otherFiles - the list of files to add

Returns:

this

Throws:

IOException - if adding the layer fails

addJvmFlag

public JavaContainerBuilder addJvmFlag(String jvmFlag)

Adds a JVM flag to use when starting the application.

Parameters:

jvmFlag - the JVM flag to add

Returns:

this

addJvmFlags

public JavaContainerBuilder addJvmFlags(List<String> jvmFlags)

Adds JVM flags to use when starting the application.

Parameters:

jvmFlags - the list of JVM flags to add

Returns:

this

addJvmFlags

public JavaContainerBuilder addJvmFlags(String... jvmFlags)

Adds JVM flags to use when starting the application.

Parameters:

jvmFlags - the list of JVM flags to add

Returns:

this

setMainClass

public JavaContainerBuilder setMainClass(String mainClass)

Sets the container entrypoint with the specified main class. The entrypoint will be left unconfigured if this method is not called. To find the main class from .class files, use MainClassFinder.

Parameters:

mainClass - the main class used to start the application

Returns:

this

See Also:

MainClassFinder

toContainerBuilder

public JibContainerBuilder toContainerBuilder()
                                       throws IOException

Returns a new JibContainerBuilder using the parameters specified on the JavaContainerBuilder.

Returns:

a new JibContainerBuilder using the parameters specified on the JavaContainerBuilder

Throws:

IOException - if building the JibContainerBuilder fails.